From 2c3e30685b80e881cf109ec8d5ad9ab73cfab6cf Mon Sep 17 00:00:00 2001
From: Patrick McDermott <patrick.mcdermott@libiquity.com>
Date: Sat, 19 Oct 2019 01:41:07 -0400
Subject: build: Ensure C compiler is in C99 mode

---
diff --git a/configure.ac b/configure.ac
index cb06555..9ede095 100644
--- a/configure.ac
+++ b/configure.ac
@@ -30,6 +30,7 @@ AM_CONDITIONAL([IN_GIT],
 
 AC_PROG_CC()
 AM_PROG_CC_C_O()
+AC_PROG_CC_C99()
 
 AX_CFLAGS_WARN_ALL()  dnl Adds -Wall or equivalent
 AX_CHECK_COMPILE_FLAG([-Wpedantic], [AX_APPEND_FLAG([-Wpedantic])])
--
cgit v0.9.1